CVE-2022-32296

Published: Jun 5, 2022Modified: Oct 14, 2026

3.3

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitability: 1.8 / Impact: 1.4

Source: NVD

Description

The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 ("Double-Hash Port Selection Algorithm") of RFC 6056.

Affected (1)

Products: Linux: Linux Kernel

Linux

1 product

Linux Kernel

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	version < 5.17.9

Related CWEs

CWE-330

Use of Insufficiently Random Values

The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

References (14)

https://arxiv.org/abs/2209.12993

Source: cve@mitre.org

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9

Source: cve@mitre.org

Release NotesVendor Advisory

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5

Source: cve@mitre.org

Mailing ListPatchVendor Advisory

https://github.com/0xkol/rfc6056-device-tracker

Source: cve@mitre.org

https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html

Source: cve@mitre.org

https://www.debian.org/security/2022/dsa-5173

Source: cve@mitre.org

https://arxiv.org/abs/2209.12993